US20090116119A1 - Compact zoom lens - Google Patents
Compact zoom lens Download PDFInfo
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- US20090116119A1 US20090116119A1 US12/267,134 US26713408A US2009116119A1 US 20090116119 A1 US20090116119 A1 US 20090116119A1 US 26713408 A US26713408 A US 26713408A US 2009116119 A1 US2009116119 A1 US 2009116119A1
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- lens
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- zoom
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/145—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only
- G02B15/1451—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive
- G02B15/145121—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive arranged +-+-+
Definitions
- Apparatuses consistent with the present invention relate to a zoom lens that has various focal lengths and is applicable to photo cameras, television cameras and various optical system.
- CCD charge-coupled device
- CMOS complementary metal-oxide semiconductor
- an auto-zoom lens includes a plurality of groups of lenses so that some groups of lenses are fixed and the remaining groups of lenses move.
- the present invention provides a zoom lens having various focal lengths and a good image quality.
- a zoom lens including: a first lens group with a positive refractive power; a second lens group with a negative refractive power; a third lens group with a positive refractive power; a fourth lens group with a negative refractive power; and a fifth lens group with a positive refractive power.
- the first through fifth lens groups are sequentially arranged toward an image side from an object side, and the second, fourth, and fifth lens groups move along an optical axis direction during zooming.
- the second and fourth lens groups may move toward the image side from the object side, and the fifth lens group moves non-monotonously.
- the first lens group may include two meniscus lenses, each meniscus lens having a convex surface toward the object side, and a doublet lens formed by cementing two lenses and interposed between the two meniscus lenses.
- One of the meniscus lenses of the first group which is closest to the object side, may be a negative lens formed of flint glass.
- the second lens group may include a single meniscus lens with a convex surface toward the object side and a doublet lens formed by cementing two lenses.
- the third lens group may include a biconvex lens and a doublet lens formed by cementing two lenses.
- the fourth lens group may include a biconcave lens and a doublet lens formed by cementing two lenses.
- the fifth lens group may include a biconcave lens and a doublet lens formed by cementing two lenses.
- FIGS. 1A and 1B show optical arrangements of a zoom lens according to an exemplary embodiment of the present invention, which are seen from two zoom positions corresponding to both ends, respectively;
- FIGS. 2A and 2B are a modulation transfer function (MTF) graph and an aberration diagram of a field curvature and distortion, respectively, at a first standard zoom position of a zoom lens according to an exemplary embodiment of the present invention
- FIG. 3 is an aberration diagram of a field curvature and distortion at a second standard zoom position of the zoom lens according to the exemplary embodiment of the present invention
- FIGS. 4A and 4B are an MTF graph and an aberration diagram of a field curvature and distortion, respectively, at a third standard zoom position of the zoom lens according to the exemplary embodiment of the present invention.
- FIGS. 5A and 5B are an MTF graph and an aberration diagram of a field curvature and distortion, respectively, at a fourth standard zoom position of the zoom lens according to the exemplary embodiment of the present invention.
- FIGS. 6A and 6B are an MTF graph and an aberration diagram of a field curvature and distortion, respectively, at a fifth standard zoom position of the zoom lens according to the exemplary embodiment of the present invention.
- FIGS. 7A and 7B are an MTF graph and an aberration diagram of a field curvature and distortion, respectively, at a sixth standard zoom position of the zoom lens according to the exemplary embodiment of the present invention.
- FIGS. 1A and 1B show optical arrangements of a zoom lens according to an exemplary embodiment of the present invention, which are seen from two zoom positions corresponding to both ends, respectively.
- the zoom lens according to the exemplary embodiment of the present invention may include five lens groups, for example, a first lens group GI with a positive refractive power, a second lens group G 2 with a negative refractive power, a third lens group G 3 with a positive refractive power G 3 , a fourth lens group G 4 with a negative refractive power, and a fifth lens group G 5 with a positive refractive power, which are sequentially arranged from an object (OBJ) side to an image (IMG) side.
- An iris diaphragm STO may be prepared in front of the third lens group G 3 .
- an imaging device such as a charge-coupled device (CCD) imaging device or a complementary metal-oxide semiconductor (CMOS) imaging device, may be prepared on an image surface IMG.
- a cover glass 17 protecting the imaging device may be prepared between the fifth lens group G 5 and the image surface IMG.
- an infrared filter may be further prepared.
- the first and third lens groups G 1 and G 3 may be fixed, while the second and fourth lens groups G 2 and G 4 may move.
- the second lens group G 2 may move toward image side from an object side, for example, monotonously and quasi-linearly.
- the fourth lens group G 4 s may also move toward the image side from the object side during zooming from the wide-angle end to the telephoto end.
- the fifth lens group G 5 may move along an optical axis and implement focusing according to movements of the second and fourth lens groups G 2 and G 4 . In other words, the fifth lens group G 5 may compensate for inaccuracies in the movements of the second and fourth lens groups G 2 and G 4 to enable more precise focusing.
- the first lens group GI may include a first lens 1 , a second lens 2 , a third lens 3 , and a fourth lens 4 .
- Each of the first and fourth lenses 1 and 4 may be a meniscus lens with its convex surface toward the object side.
- a doublet lens formed by attaching together, e.g., cementing, the second and third lenses 2 and 3 may be prepared between the first and fourth lenses 1 and 4 .
- the first lens 1 which is a negative lens, may be formed of flint glass.
- the first group GI of lenses may be fixed during zooming.
- the second group lens G 2 may include a fifth lens 5 , a sixth lens 6 , and a seventh lens 7 .
- the fifth lens 5 may be a meniscus lens with its convex surface toward the object side
- the sixth and seventh lenses 6 and 7 may be attached together, e.g., cemented, to form a doublet lens.
- the second lens group G 2 may move long the optical axis during zooming so that it can move according to the rules in order to obtain a required focal length.
- the third lens group G 3 may include an eighth lens 8 , a ninth lens 9 , and a tenth lens 10 .
- the eighth lens 8 may be a biconvex lens
- the ninth and tenth lenses 9 and 10 may be attached together, e.g., cemented, to form a doublet lens.
- the third lens group G 3 may be fixed during zooming.
- the fourth group G 4 of lenses may include an eleventh lens 11 , a twelfth lens 12 , and a thirteenth lens 13 .
- the eleventh lens 11 may be a biconcave lens
- the twelfth and thirteenth lenses 12 and 13 may be attached together, e.g., cemented, to form a doublet lens.
- the fourth group G 4 of lenses may move along the optical axis together with the second lens group G 2 during zooming so that it can move according to the rules in order to obtain a required focal length.
- the fifth group lens G 5 may include a fourteenth lens 14 , a fifth lens 15 , and a sixth lens 16 .
- the fourteenth lens 14 may be a biconvex lens
- the fifth and sixth lenses 15 and 16 may be attached together, e.g., cemented, to form a doublet lens.
- the fifth lens group G 5 may be prepared to ensure an image quality when various focal lengths are embodied due to zooming. In other words, the fifth lens group G 5 may compensate for inaccuracies in the movements of the second lens group G 2 or the fourth lens group G 4 so as to enable more precise focusing.
- the fifth lens group G 5 may move within a smaller range than the second lens group G 2 or the fourth lens group G 4 .
- the fifth lens group G 5 may move nonlinearly and non-monotonously, i.e., in a back and forth motion, along the optical axis, during zooming.
- Lens data of the zoom lens according to the exemplary embodiment of the present invention are as follows.
- the lens data include the radii of curvature, thicknesses, materials, and diameters of lenses.
- Variable distances between lenses during zooming may be expressed by D 1 through D 5 , and a sign * following a surface number denotes an aspherical lens.
- the zoom lens according to the exemplary embodiment of the present invention has 39 ⁇ magnifications, a view angle 2 ⁇ of about 80 to 2°, and an f number of about 1.6 to 3.9.
- Focal lengths f, variable distances D 1 to D 5 between lenses, and apertures at six standard zoom positions are as follows.
- FIGS. 2A , 4 A, 5 A, 6 A, and 7 A are modulation transfer function (MTF) graphs obtained at first, third, fourth, fifth, and sixth standard zoom positions of a zoom lens according to an exemplary embodiment of the present invention
- FIGS. 2B , 3 , 4 B, 5 B, 6 B, and 7 B are aberration diagrams of a field curvature and distortion obtained at first through sixth standard zoom positions of the zoom lens according to the exemplary embodiment of the present invention.
- reference characters “T” and “S” refer to “meridional” and “sagittal”, respectively, and the wavelength range of used light beams ranged from 0.436 um to 0.656 um.
- the zoom lens according to an exemplary embodiment of the present invention includes the fifth lens group G 5 in order to enable precise focusing. This can significantly reduce the burden of controlling the movements of the second and fourth groups G 2 and G 4 of lenses with a very high degree of precision during zooming.
- the zoom lens according to the exemplary embodiment of the present invention includes the above-described construction so that it can have excellent optical performance at six standard zoom positions.
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
Description
- This application claims the benefit of Korean Patent Application No. 10-2008-0100196, filed on Oct. 13, 2008, in the Korean Intellectual Property Office, and the benefit of Russian Patent Application No.2007140946, filed on Nov. 7, 2007, the disclosures of which are incorporated herein in their entireties by reference.
- 1. Field of the Invention
- Apparatuses consistent with the present invention relate to a zoom lens that has various focal lengths and is applicable to photo cameras, television cameras and various optical system.
- 2. Description of the Related Art
- In recent years, due to the increasing usage of digital cameras or video cameras using solid-state imaging devices, such as charge-coupled device (CCD) imaging devices or complementary metal-oxide semiconductor (CMOS) imaging devices, these imaging optical devices have become more and more compact, lightweight, and inexpensive. Simultaneously, users' demand for high performance, for example, a high variable magnification ratio and a good image quality, has gradually increased.
- As a result, various designs for auto-zoom lenses whose focal lengths vary within wide ranges have been proposed. In order to embody various focal lengths, an auto-zoom lens includes a plurality of groups of lenses so that some groups of lenses are fixed and the remaining groups of lenses move. However, it is difficult to achieve a required image quality over the entire variation range of focal lengths. For example, a good image quality may be actually ensured at only three zoom positions. Therefore, it is needed to design a zoom lens capable of solving this problem.
- The present invention provides a zoom lens having various focal lengths and a good image quality.
- According to an aspect of the present invention, there is provided a zoom lens including: a first lens group with a positive refractive power; a second lens group with a negative refractive power; a third lens group with a positive refractive power; a fourth lens group with a negative refractive power; and a fifth lens group with a positive refractive power. In the zoom lens, the first through fifth lens groups are sequentially arranged toward an image side from an object side, and the second, fourth, and fifth lens groups move along an optical axis direction during zooming.
- During zooming from a wide-angle end to a telephoto end, the second and fourth lens groups may move toward the image side from the object side, and the fifth lens group moves non-monotonously.
- The first lens group may include two meniscus lenses, each meniscus lens having a convex surface toward the object side, and a doublet lens formed by cementing two lenses and interposed between the two meniscus lenses.
- One of the meniscus lenses of the first group, which is closest to the object side, may be a negative lens formed of flint glass.
- The second lens group may include a single meniscus lens with a convex surface toward the object side and a doublet lens formed by cementing two lenses.
- The third lens group may include a biconvex lens and a doublet lens formed by cementing two lenses.
- The fourth lens group may include a biconcave lens and a doublet lens formed by cementing two lenses.
- The fifth lens group may include a biconcave lens and a doublet lens formed by cementing two lenses.
- The above and other features and aspects of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:
-
FIGS. 1A and 1B show optical arrangements of a zoom lens according to an exemplary embodiment of the present invention, which are seen from two zoom positions corresponding to both ends, respectively; -
FIGS. 2A and 2B are a modulation transfer function (MTF) graph and an aberration diagram of a field curvature and distortion, respectively, at a first standard zoom position of a zoom lens according to an exemplary embodiment of the present invention; -
FIG. 3 is an aberration diagram of a field curvature and distortion at a second standard zoom position of the zoom lens according to the exemplary embodiment of the present invention; -
FIGS. 4A and 4B are an MTF graph and an aberration diagram of a field curvature and distortion, respectively, at a third standard zoom position of the zoom lens according to the exemplary embodiment of the present invention; -
FIGS. 5A and 5B are an MTF graph and an aberration diagram of a field curvature and distortion, respectively, at a fourth standard zoom position of the zoom lens according to the exemplary embodiment of the present invention; -
FIGS. 6A and 6B are an MTF graph and an aberration diagram of a field curvature and distortion, respectively, at a fifth standard zoom position of the zoom lens according to the exemplary embodiment of the present invention; and -
FIGS. 7A and 7B are an MTF graph and an aberration diagram of a field curvature and distortion, respectively, at a sixth standard zoom position of the zoom lens according to the exemplary embodiment of the present invention. - The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. In the drawings, the thicknesses of layers and regions are exaggerated for clarity. Like numbers refer to like elements throughout.
-
FIGS. 1A and 1B show optical arrangements of a zoom lens according to an exemplary embodiment of the present invention, which are seen from two zoom positions corresponding to both ends, respectively. - Referring to
FIGS. 1A and 1B , the zoom lens according to the exemplary embodiment of the present invention may include five lens groups, for example, a first lens group GI with a positive refractive power, a second lens group G2 with a negative refractive power, a third lens group G3 with a positive refractive power G3, a fourth lens group G4 with a negative refractive power, and a fifth lens group G5 with a positive refractive power, which are sequentially arranged from an object (OBJ) side to an image (IMG) side. An iris diaphragm STO may be prepared in front of the third lens group G3. Although not shown, an imaging device, such as a charge-coupled device (CCD) imaging device or a complementary metal-oxide semiconductor (CMOS) imaging device, may be prepared on an image surface IMG. Acover glass 17 protecting the imaging device may be prepared between the fifth lens group G5 and the image surface IMG. Also, an infrared filter may be further prepared. - In the zoom lens according to the exemplary embodiment of the present invention, when zooming, the first and third lens groups G1 and G3 may be fixed, while the second and fourth lens groups G2 and G4 may move. During zooming from a wide-angle end to a telephoto end, the second lens group G2 may move toward image side from an object side, for example, monotonously and quasi-linearly. The fourth lens group G4 s may also move toward the image side from the object side during zooming from the wide-angle end to the telephoto end. The fifth lens group G5 may move along an optical axis and implement focusing according to movements of the second and fourth lens groups G2 and G4. In other words, the fifth lens group G5 may compensate for inaccuracies in the movements of the second and fourth lens groups G2 and G4 to enable more precise focusing.
- Construction of the lens groups GI through G5 will now be described in more detail.
- The first lens group GI may include a
first lens 1, asecond lens 2, athird lens 3, and afourth lens 4. Each of the first andfourth lenses third lenses fourth lenses first lens 1, which is a negative lens, may be formed of flint glass. The first group GI of lenses may be fixed during zooming. - The second group lens G2 may include a
fifth lens 5, asixth lens 6, and aseventh lens 7. For example, thefifth lens 5 may be a meniscus lens with its convex surface toward the object side, and the sixth andseventh lenses - The third lens group G3 may include an
eighth lens 8, aninth lens 9, and atenth lens 10. For example, theeighth lens 8 may be a biconvex lens, and the ninth andtenth lenses - The fourth group G4 of lenses may include an
eleventh lens 11, atwelfth lens 12, and athirteenth lens 13. For example, theeleventh lens 11 may be a biconcave lens, and the twelfth andthirteenth lenses - The fifth group lens G5 may include a
fourteenth lens 14, afifth lens 15, and asixth lens 16. For example, thefourteenth lens 14 may be a biconvex lens, and the fifth andsixth lenses - During zooming, the fifth lens group G5 may move within a smaller range than the second lens group G2 or the fourth lens group G4. For example, the fifth lens group G5 may move nonlinearly and non-monotonously, i.e., in a back and forth motion, along the optical axis, during zooming.
- Lens data of the zoom lens according to the exemplary embodiment of the present invention are as follows. The lens data include the radii of curvature, thicknesses, materials, and diameters of lenses. Variable distances between lenses during zooming may be expressed by D1 through D5, and a sign * following a surface number denotes an aspherical lens.
-
Surface/Radius of curvature/Thickness/Material/Diameter/ Conic constant OBJ Infinity Infinity 1 57.52859 1.653052 SF57 58.61237 0 2 43.51602 1.580064 54.08977 0 3 49.73049 19.37032 FCD10 53.9433 0 4 −44.59086 3.024693 BK7 47.87725 0 5 −193.5404 0.1423909 37.60098 0 6 32.39125 6.63269 FK5 26.51158 0 7 123.038 D1 18.42883 0 8 490.7384 0.6772056 S-LAH58 17.82152 0 9* 7.109735 4.404882 12.93184 −0.5833861 10 −19.97442 3.492044 N-LAF34 12.90678 0 11 9.252809 4.484457 SF57 12.92831 0 12 107.2223 D2 12.77297 0 STO Infinity 0.2 11.32573 0 14* 24.87885 3.344874 N-SK5 11.71668 −2.455584 15 −26.41103 0.1514151 11.96365 0 16 18.42726 0.7331302 SF57 11.82418 0 17 9.919783 4.663668 N-SK5 11.29697 0 18 −36.27423 D3 10.81353 0 19 −28.51005 0.6716656 N- 10.77818 0 LASF44 20 11.31392 0.2705404 10.54105 0 21 10.69522 0.9175533 SF2 10.913 0 22 7.096664 2.805791 SF57 10.79377 0 23 12.02057 D4 10.36933 0 24 15.82589 4.680485 FK5 15.6301 −1.086487 25 −21.60283 0.7964118 15.44503 0 26 14.24238 4.897596 N-SK5 13.00893 0 27 −8.344696 1.52174 SF57 12.70265 0 28* −42.00647 D5 12.02195 25.1624 29 Infinity 2 BK7 7.706201 0 30 Infinity 2 6.319276 0 IMG Infinity 4.550047 0 - The zoom lens according to the exemplary embodiment of the present invention has 39× magnifications, a view angle 2ω of about 80 to 2°, and an f number of about 1.6 to 3.9. Focal lengths f, variable distances D1 to D5 between lenses, and apertures at six standard zoom positions are as follows.
- First standard zoom position (f=2.63 mm)
- D1: 0.334677
- D2: 38.86532
- D3: 0.1787433
- D4: 18.24062
- D5: 3.130411
- Aperture: 1.64
- Second standard zoom position (f=5.12 mm)
- D1: 11.578
- D2: 27.622
- D3: 2.119287
- D4: 16.89185
- D5: 2.538272
- Aperture: 2.95
- Third standard zoom position (f=10.26 mm)
- D1: 21.58687
- D2: 17.61313
- D3: 4.433143
- D4: 14.19202
- D5: 2.924905
- Aperture: 6.6
- Fourth standard zoom position (f=22.0 mm)
- D1: 28.78316
- D2: 10.41684
- D3: 8.375212
- D4: 10.37058
- D5: 2.803959
- Aperture: 10
- Fifth standard zoom position (f=44.5 mm)
- D1: 34.1428
- D2: 5.057203
- D3: 12.31351
- D4: 4.827702
- D5: 4.408089
- Aperture: 13
- Sixth standard zoom position (f=102.5 mm)
- D1: 38.28184
- D2: 0.9181604
- D3: 18.60366
- D4: 0.4797248
- D5: 2.466178
- Aperture: 25.63
-
FIGS. 2A , 4A, 5A, 6A, and 7A are modulation transfer function (MTF) graphs obtained at first, third, fourth, fifth, and sixth standard zoom positions of a zoom lens according to an exemplary embodiment of the present invention, andFIGS. 2B , 3, 4B, 5B, 6B, and 7B are aberration diagrams of a field curvature and distortion obtained at first through sixth standard zoom positions of the zoom lens according to the exemplary embodiment of the present invention. In the drawings, reference characters “T” and “S” refer to “meridional” and “sagittal”, respectively, and the wavelength range of used light beams ranged from 0.436 um to 0.656 um. - The zoom lens according to an exemplary embodiment of the present invention includes the fifth lens group G5 in order to enable precise focusing. This can significantly reduce the burden of controlling the movements of the second and fourth groups G2 and G4 of lenses with a very high degree of precision during zooming.
- The zoom lens according to the exemplary embodiment of the present invention includes the above-described construction so that it can have excellent optical performance at six standard zoom positions.
- While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by one of ordinary skill in the art that various variations in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (10)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2007140946/28A RU2007140946A (en) | 2007-11-07 | 2007-11-07 | COMPACT VARIABLE LENS |
RU2007140946 | 2007-11-07 | ||
KR10-2008-0100196 | 2008-10-13 | ||
KR1020080100196A KR20090047350A (en) | 2007-11-07 | 2008-10-13 | Compact zoom lens |
Publications (2)
Publication Number | Publication Date |
---|---|
US20090116119A1 true US20090116119A1 (en) | 2009-05-07 |
US7777966B2 US7777966B2 (en) | 2010-08-17 |
Family
ID=40380542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/267,134 Expired - Fee Related US7777966B2 (en) | 2007-11-07 | 2008-11-07 | Compact zoom lens |
Country Status (2)
Country | Link |
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US (1) | US7777966B2 (en) |
EP (1) | EP2060944B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014145805A (en) * | 2013-01-28 | 2014-08-14 | Nikon Corp | Variable power optical system, optical device, and method of manufacturing variable power optical system |
JP2014145806A (en) * | 2013-01-28 | 2014-08-14 | Nikon Corp | Variable power optical system, optical device, and method of manufacturing variable power optical system |
JP2017191127A (en) * | 2016-04-11 | 2017-10-19 | キヤノン株式会社 | Zoom lens and imaging device using the same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2992741B1 (en) * | 2012-06-28 | 2015-04-10 | Dcns | DEVICE FOR MONITORING THE OUTER ENVIRONMENT OF A PLATFORM, PARTICULARLY NAVAL, PERISCOPE AND PLATFORM COMPRISING SUCH A DEVICE |
US10670842B2 (en) * | 2017-01-26 | 2020-06-02 | Navitar, Inc. | High Etendue zoom lens having five lens groups |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5933281A (en) * | 1996-10-07 | 1999-08-03 | Nikon Corporation | Zoom lens system |
US5956184A (en) * | 1996-09-04 | 1999-09-21 | Nikon Corporation | Zoom lens system having high zoom ratio |
US6025962A (en) * | 1996-09-12 | 2000-02-15 | Nikon Corporation | Zoom lens with an anti-vibration function |
US20060221460A1 (en) * | 2005-04-01 | 2006-10-05 | Canon Kabushiki Kaisha | Zoom lens system and image pickup apparatus with the system |
US20070201146A1 (en) * | 2006-02-27 | 2007-08-30 | Canon Kabushiki Kaisha | Zoom lens and image pickup apparatus having the same |
US7630141B2 (en) * | 2007-11-05 | 2009-12-08 | Canon Kabushiki Kaisha | Zoom lens and image pickup apparatus having the zoom lens |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59195214A (en) | 1983-04-20 | 1984-11-06 | Olympus Optical Co Ltd | Zoom lens with high variable power |
JP3226297B2 (en) | 1991-06-29 | 2001-11-05 | オリンパス光学工業株式会社 | Zoom lens and camera with zoom lens |
JP2001356270A (en) | 2000-06-15 | 2001-12-26 | Canon Inc | Variable power optical system having vibration-proof function and optical equipment using the same |
JP4016204B2 (en) * | 2003-01-17 | 2007-12-05 | ソニー株式会社 | Zoom lens and imaging device |
JP4182088B2 (en) * | 2005-07-27 | 2008-11-19 | キヤノン株式会社 | Zoom lens and optical apparatus having the same |
-
2008
- 2008-11-07 EP EP08168590.1A patent/EP2060944B1/en not_active Expired - Fee Related
- 2008-11-07 US US12/267,134 patent/US7777966B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5956184A (en) * | 1996-09-04 | 1999-09-21 | Nikon Corporation | Zoom lens system having high zoom ratio |
US6025962A (en) * | 1996-09-12 | 2000-02-15 | Nikon Corporation | Zoom lens with an anti-vibration function |
US5933281A (en) * | 1996-10-07 | 1999-08-03 | Nikon Corporation | Zoom lens system |
US20060221460A1 (en) * | 2005-04-01 | 2006-10-05 | Canon Kabushiki Kaisha | Zoom lens system and image pickup apparatus with the system |
US20070201146A1 (en) * | 2006-02-27 | 2007-08-30 | Canon Kabushiki Kaisha | Zoom lens and image pickup apparatus having the same |
US7630141B2 (en) * | 2007-11-05 | 2009-12-08 | Canon Kabushiki Kaisha | Zoom lens and image pickup apparatus having the zoom lens |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014145805A (en) * | 2013-01-28 | 2014-08-14 | Nikon Corp | Variable power optical system, optical device, and method of manufacturing variable power optical system |
JP2014145806A (en) * | 2013-01-28 | 2014-08-14 | Nikon Corp | Variable power optical system, optical device, and method of manufacturing variable power optical system |
JP2017191127A (en) * | 2016-04-11 | 2017-10-19 | キヤノン株式会社 | Zoom lens and imaging device using the same |
Also Published As
Publication number | Publication date |
---|---|
EP2060944A3 (en) | 2009-09-30 |
EP2060944A2 (en) | 2009-05-20 |
EP2060944B1 (en) | 2016-07-20 |
US7777966B2 (en) | 2010-08-17 |
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